IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
inv funs iff inv funs 212 1. A,B:Type, f:(AB), g:(BA). g o f = Id (x:A. g(f(x)) = x)
A,B:Type, f:(AB), g:(BA).
g o f = Id & f o g = Id (x:A. g(f(x)) = x) & (y:B. f(g(y)) = y)
By:
Auto THEN BackThru: Hyp:1
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html